25 Grand Canyon Facts That Reveal America’s 6 Million-Year-Old Natural Wonder
"Leave it as it is," implored Teddy Roosevelt in 1903. “You cannot improve on it. The ages have been at work on it, and man can only mar it."
By Erin Kelly
•
Feb 12, 2019
25 Grand Canyon Facts That Reveal America’s 6 Million-Year-Old Natural Wonder
"Leave it as it is," implored Teddy Roosevelt in 1903. “You cannot improve on it. The ages have been at work on it, and man can only mar it."
By Erin Kelly
•
February 12, 2019